A. rises 　　　　 B. rose 　　　　　　    C. is risen 　　　　    D. was risen

　The word“day” has two meanings. When we talk about the number of days in a year,  we are using “day” to mean 24 hours. But when we talk about day and night,  we are using“day” to mean the time between sunrise and sunset. Since the earth looks like a ball,  the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning（旋转）of the earth. At the equator（赤道）day and night are sometimes the same length（长度）. They are each twelve hours long. The sun rises at 6 o’clock in the morning and sets at 6 o’clock in the evening. For six months the North Pole is tilted（倾斜）toward the sun. In those months the Northern Hemisphere（半球）gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than nights. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.

1.When the Western Hemisphere is having day,  the Eastern Hemisphere is having ________.

　　A. both day and night　　　　　　　B. day

　　C. neither day nor night　　　　　　D. night

2.A place is moved from day into night and from night into day over and over by ________ of the earth.

　　A. the pushing　　B. the pulling　　 C. the spinning　　D. the passing

3.．At the equator day is as long as night ________.

　　A. sometimes　　 B. never　　　　 C. usually　　　　D. always

4.When the North Pole is tilted toward the sun,  the Northern Hemisphere gets ________ sunlight.

　　A. less　　　　　B. more　　　　 C. all　　　　　　D. no

5.．When it is winter in China,  ________.

　　A. the USA is tilted toward the sun

　　B. the South Pole is tilted away from the sun

　　C. the North Pole is tilted toward the sun

　　D. the North Pole is tilted away from the sun

The word “day” has two meanings. When we talk about the number of days in a year, we are using “day” to mean 24 hours. But when we talk about day and night, we are using “day” to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning（旋转）of the earth. At the equator（赤道）day and night are sometimes the same length（长度）. They are each twelve hours long. The sun rises at 6 o’clock in the morning and sets at 6 o’clock in the evening. For six months the North Pole is tilted（倾斜）toward the sun. In those months the Northern Hemisphere（半球）gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than nights. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.

（   ）6.When the Western Hemisphere is having day, the Eastern Hemisphere is having ________.

　　     A. both day and night              B. day

　　     C. neither day nor night            D. night

（   ）7. A place is moved from day into night and from night into day over and over by ________ of the earth.

　　     A. the pushing                    B. the pulling

C. the spinning                    D. the passing

（   ）8. At the equator day is as long as night ________.

　　        A. sometimes     B. never       C. usually        D. always

（   ）9. When the North Pole is tilted toward the sun, the Northern Hemisphere gets ________ sunlight.

　　    A. less           B. more       C. all            D. no

（   ）10. When it is winter in China,  ________.

　　    A. the USA is tilted toward the sun

　　    B. the South Pole is tilted away from the sun

　　    C. the North Pole is tilted toward the sun

　　    D. the North Pole is tilted away from the sun

The word “day” has two meanings. When we talk about the number of days in a year, we are using “day” to mean 24 hours. But when we talk about day and night, we are using “day” to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning（旋转）of the earth. At the equator（赤道）day and night are sometimes the same length（长度）. They are each twelve hours long. The sun rises at 6 o’clock in the morning and sets at 6 o’clock in the evening. For six months the North Pole is tilted（倾斜）toward the sun. In those months the Northern Hemisphere（半球）gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than nights. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.
（  ）6.When the Western Hemisphere is having day, the Eastern Hemisphere is having ________.
　　     A. both day and night              B. day
　　     C. neither day nor night            D. night
（  ）7. A place is moved from day into night and from night into day over and over by ________ of the earth.
　　     A. the pushing                    B. the pulling
C. the spinning                    D. the passing
（  ）8. At the equator day is as long as night ________.
　　        A. sometimes     B. never       C. usually        D. always
（  ）9. When the North Pole is tilted toward the sun, the Northern Hemisphere gets ________ sunlight.
　　    A. less           B. more       C. all            D. no
（  ）10. When it is winter in China,  ________.
　　    A. the USA is tilted toward the sun
　　    B. the South Pole is tilted away from the sun
　　    C. the North Pole is tilted toward the sun
　　    D. the North Pole is tilted away from the sun

阅读理解

　　For thousands of years men have dreamed about going to the moon. Now men have landed on it but living there will not be easy, because the moon is a dead world without air or water.

　　Man has lived on the earth under very hard conditions. At the South Pole (南极) men have lived for many months in temperatures of 75 to 100 degrees below zero centigrade.

　　Living on the moon will be even harder than living at the South Pole. Each night is two weeks long and the temperature drops to 200 degrees below zero centigrade. Each day is two weeks long, but the temperature rises to 200 degrees above zero.

　　If man hopes to live on the moon he will have to make his houses there strong and airtight (密封的).Instead of building up, he will have to dig below the moon's surface (表面) and live underground. The first men on the moon had to carry their own air, water and food with them from the earth. Later when men live on the moon, spaceships will have to keep bringing in more supplies. Many years later, man might be able to find ways to get his air, food and water supplies from the moon itself.

1．Choose the best title of the text.

[　　]

2．A night on the moon ________.

[　　]

3．Temperatures on the moon are ________.

[　　]

A．changing with the four seasons

B．quite different in different places

C．the same all the time

D．very high in the day and very low at night

4．Houses on the moon will have to be made below the moon's surface so that men can ________.

[　　]

A．keep getting water from underground

B．keep the air from rushing out

C．live underground

D．keep the heat and cold out

5．From the text we can infer (推断)________.

[　　]

A．living on the moon is impossible

B．to live on the moon we must find ways to keep on getting air, water and food

C．man is likely to live on the moon if rich enough

D．air, water and food are due to be found on the moon